//
// UserNamePasswordValidator.cs
//
// Author:
//	Atsushi Enomoto <atsushi@ximian.com>
//
// Copyright (C) 2006 Novell, Inc.  http://www.novell.com
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Collections.ObjectModel;
using System.IdentityModel.Policy;
using System.IdentityModel.Tokens;
using System.Web.Security;

namespace System.IdentityModel.Selectors
{
	public abstract class UserNamePasswordValidator
	{
		protected UserNamePasswordValidator ()
		{
		}

		static UserNamePasswordValidator none_validator =
			new NoneValidator ();

		public static UserNamePasswordValidator None {
			get { return none_validator; }
		}

		public static UserNamePasswordValidator
			CreateMembershipProviderValidator (MembershipProvider provider)
		{
			if (provider == null)
				throw new ArgumentNullException ("provider");
			return new MembershipUserNameValidator (provider);
		}

		public abstract void Validate (string userName, string password);

		class NoneValidator : UserNamePasswordValidator
		{
			public override void Validate (string user, string pass)
			{
			}
		}

		class MembershipUserNameValidator : UserNamePasswordValidator
		{
			MembershipProvider provider;

			public MembershipUserNameValidator (MembershipProvider provider)
			{
				this.provider = provider;
			}

			public override void Validate (string user, string pass)
			{
				if (!provider.ValidateUser (user, pass))
					throw new SecurityTokenException ("The user does not exist or was not validated with the given password.");
			}
		}
	}
}
